Stunt maneuvers in planes like this always bring me back to the story of Alvin Johnston.
The 367-80 (also known as the Dash 80 or Model 707) was a prototype plane designed by Boeing in 1952 and built by '54. Boeing risked the future of the company on this ~$16 million project, designed to show airline customers the feasibility and advantages of jet aircraft for the future of passenger flight. It had little luck and experience selling to commercial airlines in the past, and in order to outdo the more standard Douglas Aircraft's DC7, they would have to show a completed aircraft. However, they could only afford to build the one, which was then shown around to various airlines and boards.
In 1955 at the Seafair in Seattle, the Dash 80 was shown off to members of the Aircraft Industries Association and the International Air Transport Association. The plane was scheduled for a flyover during the Gold Cup course. However, the test pilot, Alvin M. Johnston (nicknamed "Tex" because he liked wearing cowboy boots and a Stetson, though sadly he's from Kansas), lost his motherfucking mind and instead decided to perform two barrel rolls over the event. Although this was "completely safe" according to the specs of the prototype, Tex's experience with the aircraft, and physics, remember that this is a TESTING PROTOTYPE, and remember that noone else (in the aircraft even!) knew it was going to happen.
Understandably after witnessing his company's "golden goose" prototype being piloted with all the glee of a 14-year-old playing Microsoft Flight Simulator, the president of Boeing, Bill Allen, called Tex to his office the next day and asked him what the hell he thought he was doing rolling their company's future around in the sky. Tex replied, "I was selling airplanes". Allen asked Tex not to do it again (likely because, having experienced one panic attack, Allen did not want to repeat the event).
Here's to Tex and his giant fucking balls.